﻿//  Copyright (c) 2016, Ben Hopkins (kode80)
//  All rights reserved.
//  
//  Redistribution and use in source and binary forms, with or without modification, 
//  are permitted provided that the following conditions are met:
//  
//  1. Redistributions of source code must retain the above copyright notice, 
//     this list of conditions and the following disclaimer.
//  
//  2. Redistributions in binary form must reproduce the above copyright notice, 
//     this list of conditions and the following disclaimer in the documentation 
//     and/or other materials provided with the distribution.
//  
//  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY 
//  EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
//  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL 
//  THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
//  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT 
//  OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 
//  HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 
//  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, 
//  EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

using UnityEngine;
using System.Collections;
using System.Collections.Generic;

namespace kode80.GUIWrapper
{
	public class GUIBaseContainer : GUIBase
	{
		private List<GUIBase> _children;

		protected virtual bool areChildrenHidden { get { return false; } }

		public GUIBaseContainer()
		{
			_children = new List<GUIBase>();
		}

		public GUIBase Add( GUIBase child)
		{
			_children.Add( child);
			return child;
		}

		public void Remove( GUIBase child)
		{
			_children.Remove( child);
		}

		public void RemoveAll()
		{
			_children.Clear();
		}

		protected override void CustomOnGUI()
		{
			BeginContainerOnGUI();

			if( areChildrenHidden == false)
			{
				foreach( GUIBase gui in _children)
				{
					gui.OnGUI();
				}
			}

			EndContainerOnGUI();
		}

		protected virtual void BeginContainerOnGUI()
		{
			// Subclasses implement 'opening' container GUI code here
		}

		protected virtual void EndContainerOnGUI()
		{
			// Subclasses implement 'closing' container GUI code here
		}
	}
}